The Riddler is looking for the answer to the ultimate riddle, the true identity of Batman, so he hatches a plan to capture Batgirl and Robin in order to force Batman into the open to rescue them--and Batman will need some help to preserve his secret.
The female villains bet on which one can make the most members of the Super Hero Squad fall for them on Valentine's Day, his fellow squad members tease the Hulk about being in love, and Iron Man invents something to clean up after the Hulk.
On Valentine's Day, a bet between Enchantress, Screaming Mimi, and Mystique has the super-villainesses using their feminine wiles on the Super Hero Squad to see how many of their fractals each can get her hands on.
When Doom invents a time machine, he decides to go back in time and get rid of the Super Hero Squad before they became superheroes. But will his evil plan work?
The Collector has sent Man-Wolf and Drax the Destroyer to capture super heroes and villains for his collection. Iron Man, Reptil, Wolverine, Falcon, and Silver Surfer must find a way to free the captives.